Open AccessAbnormal grain growth in fine-grained aluminum produced by friction-stir welding
Author(s) -
Sergey Mironov,
Rustam Kaibyshev
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/672/1/012043
Subject(s) - grain growth , abnormal grain growth , materials science , grain boundary , friction stir welding , welding , annealing (glass) , aluminium , metallurgy , grain boundary strengthening , grain size , crystallography , microstructure , chemistry
In this work, fundamental aspects of abnormal grain growth, which typically occurs during annealing of friction-stir welded (FSW) aluminium, were studied. To this end, crystallographic orientations of abnormally-coarse grains were systematically examined. Statistical analysis showed that those were not random. Specifically, it was found that the abnormal grain growth resulted in ~30° rotation of FSW-induced B/-B {112} texture. Accordingly, the abnormal character of the grain growth was interpreted in terms of increased mobility of 30° boundaries.